Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754345AbZCTGBt (ORCPT ); Fri, 20 Mar 2009 02:01:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752965AbZCTGBj (ORCPT ); Fri, 20 Mar 2009 02:01:39 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:43340 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751720AbZCTGBi (ORCPT ); Fri, 20 Mar 2009 02:01:38 -0400 Date: Fri, 20 Mar 2009 11:31:28 +0530 From: Dipankar Sarma To: Eric Dumazet Cc: paulmck@linux.vnet.ibm.com, Arjan van de Ven , linux-input@vger.kernel.org, dmitry.torokhov@gmail.com, linux-kernel@vger.kernel.org Subject: Re: Question about usage of RCU in the input layer Message-ID: <20090320060128.GC6167@in.ibm.com> Reply-To: dipankar@in.ibm.com References: <20090318215812.15496a86@infradead.org> <20090319085628.GA6167@in.ibm.com> <20090319071841.63334eff@infradead.org> <20090320020750.GA6807@linux.vnet.ibm.com> <20090319202032.4c971d92@infradead.org> <20090320044541.GE6807@linux.vnet.ibm.com> <49C3296B.1020209@cosmosbay.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <49C3296B.1020209@cosmosbay.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 616 Lines: 16 On Fri, Mar 20, 2009 at 06:28:11AM +0100, Eric Dumazet wrote: > Paul E. McKenney a ?crit : > Hmm... point is to make linux boot as fast as possible, so ... > > Use a special variant of udelay() in offending drivers that make appropriate > RCU call to increment quiescent state ? It may not be safe to do this it is in a RCU read-side critical section. Thanks Dipankar -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/